The question of whether King Charles had secretly married Lucy Walter was raised during the Exclusion Crisis, when a Protestant faction wished to make her son the heir to the throne, while the king denied any marriage, and supported the claim of his brother, the Duke of York. Indeed, the question has persisted and is the subject of numerous non-fiction writers on the subject including, but not limited to G.D. Gilbert's Appendix A to Baronne Marie Catherine D'Aulnoy's "Memoirs of the Court of England in 1675". <edited by G.D. Gilbert,Kissinger Publishing's Rare Reprints, originally published 1913.>

Most outstanding of these so-called straws are several surviving letters from Daniel O'Neil, Charles II and his mother and sister referring to her as wife and him as husband.< MacAll, Brat, "Brown, Beautiful and Bold: Review of Her Non-Fiction Literature with Questions", Kindle 2012, Createspace of Amazon,2013>